Bump node-fetch and docusaurus in /docusaurus/website

Removes [node-fetch](https://github.com/node-fetch/node-fetch). It's no longer used after updating ancestor dependency [docusaurus](https://github.com/facebook/docusaurus/tree/HEAD/packages/docusaurus-1.x). These dependencies need to be updated together.


Removes `node-fetch`

Updates `docusaurus` from 1.0.7 to 1.14.7
- [Release notes](https://github.com/facebook/docusaurus/releases)
- [Changelog](https://github.com/facebook/docusaurus/blob/v1.14.7/CHANGELOG.md)
- [Commits](https://github.com/facebook/docusaurus/commits/v1.14.7/packages/docusaurus-1.x)

---
updated-dependencies:
- dependency-name: node-fetch
  dependency-type: indirect
- dependency-name: docusaurus
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>